Why Does More Vapour Form When Taking a Bath in Colder Weather?

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SUMMARY

The formation of more vapor during a bath in colder weather is primarily due to the condensation of water vapor in the cold air. When the air temperature is lower, its capacity to hold water vapor decreases, leading to visible steam as the warmer bath water evaporates. Although the warmer water can indeed evaporate more water vapor, the visibility of this vapor is significantly affected by the surrounding air temperature. The temperature difference between the bath water and the air plays a crucial role in the evaporation rate and the subsequent condensation of water vapor.

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When the temperature in a city is lower and one has a bath in the bathroom then why does more vapour get created? More vapour than it would be created when the temperature is higher?
 
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Maybe it doesn't? Perhaps you see more steam (ie. condensed water vapour) because the air is colder and the water vapour from the bath consenses in the cold air.

But maybe it does! When the air is colder, the amount of water vapour it can have is less. (Which is why it condenses, as above.) But if the air gets warmed by the bath water then it becomes capable of holding more water vapour. So maybe more bathwater can evaporate then?

Since water vapour is invisible and the amount of water which evaporates is too small to notice as a fall in liquid level, my guess is the first case. You are noticing more condensed water vapour (colloquially, "steam") in the cold air and thinking that is water vapour. When the air is warm, the water evaporates, becomes invisible and you never see it again! So you don't realize there was lots of water vapour.
 
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Check out the water vapour thread . The temperature difference is a factor in the evaporation rate.
(In your case the 'containing volume' isn't closed).
 

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